Results 21 to 30 of about 14,508 (165)

Surface‐Embedded Ag@Multilayer Graphene for Photothermal‐Enhanced Superhydrophobic Anti‐Icing Coatings

open access: yesRare Metals, EarlyView.
ABSTRACT Harnessing solar energy for self‐heating presents an effective strategy to suppress surface ice formation. In this paper, we fabricated nano‐silver‐modified multilayer graphene sheets (Ag@MGs) that integrate photothermal and superhydrophobic properties for anti‐icing applications.
Yihan Zhang   +7 more
wiley   +1 more source

Potosynthesis, Transpiration and Water Use Efficiency of Casuarina equisetifolia Plantations of Different Ages [PDF]

open access: yes, 2012
本文对福建崇武赤湖林场不同林龄木麻黄人工林的光合作用、蒸腾作用及水分利用效率的日变化和季节变化进行了研究,从碳同化、水分耗散以及二者相互关系的角度探讨了各种生理生态因子对木麻黄人工防护林生长的影响。主要研究结果如下: 1.6龄林木麻黄成熟小枝的净光合速率日变化除夏季外为单峰曲线,22龄林和39龄林在各个季节均为双峰曲线,即存在光合“午休”现象。胞间CO2浓度和光合有效辐射是影响不同年龄木麻黄小枝净光合速率最稳定的生理和生态因子。三个林龄小枝的最大净光合速率均出现在夏季,说明夏季是木麻黄生长的旺季 ...
廖蒙蒙
core  

Broad‐Spectral Response Lead Halide Perovskite Solar Cells Through Integration of Multifunctional Organic Bulk‐Heterojunction and Quantum‐Cutting Downconversion Materials

open access: yesRare Metals, EarlyView.
ABSTRACT Expanding near‐infrared (NIR) spectral response and utilizing ultraviolet (UV) photons are effective strategies for enhancing the power conversion efficiency (PCE) of lead halide perovskite solar cells (PSCs). However, the range of NIR spectral response extension and the utilization of UV light for devices are not enough, and the loss of ...
Li He   +9 more
wiley   +1 more source

2个小麦品种水分利用效率的差异及其与深层水分利用的关系

open access: yesShuitu Baochi Xuebao, 2020
研究旨在探究不同小麦品种对深层土壤水分利用差异及其对产量、水分利用效率的影响。试验于2017—2019年在陕西长武进行,试验为品种、播量双因子试验,品种为主处理(A为"长旱58",B为"长航1号"),播量为副处理(10:播量150 kg/hm2,12:播量180 kg/hm2),分析不同处理对冬小麦各生育期土壤水分消耗及其产量和水分利用效率的影响。结果表明:在不同的试验年,与"长旱58"相比,"长航1号"对土壤水分的消耗均显著增加。与此同时,相比"长旱58","长航1号"的小麦穗粒数、收获指数 ...
刘为健   +5 more
doaj  

Effect of Drought Stress on the Characteristics of Transpiration of 4 Plants [PDF]

open access: yes, 2007
在温室条件下研究类芦等4种植物在干旱胁迫下的蒸腾特性。结果表明,在正常供水情况下,4种植物蒸腾速率和气孔阻力日变化规律明显;在干旱胁迫下,气孔阻力增大,蒸腾速率逐步降低,当水势下降到临界值时,气孔关闭,气孔阻力急剧增大,蒸腾速率降至最低。4种植物中,类芦的水分利用效率最高,其次为百喜草和香根草,五节芒最低。4种植物的抗旱力以类芦最强,百喜草和香根草其次,五节芒最弱。Based on the condition controlling in the green house,the effect of ...
卢昌义, 叶功富, 郑本暖
core  

High‐Temperature Stable Narrowband Near‐Infrared Phosphor‐Converted Light‐Emitting Diode Based on Melt‐Grown CsPbCl3: Yb3+ Crystal

open access: yesRare Metals, EarlyView.
ABSTRACT Narrowband near‐infrared (NIR) phosphor‐converted light‐emitting diodes (pc‐LEDs) featuring low full‐width at half maximum (FWHM) and high conversion efficiency are crucial for chemical content evaluation, light therapy, and bioimaging.
Chunshen Li   +4 more
wiley   +1 more source

水肥耦合对春小麦水分利用效率的影响

open access: yesShuitu Baochi Xuebao, 2004
采用312-D最优饱和设计,在辽西半干旱区开展了连续4年的春小麦田间水肥耦合试验,研究春小麦水分利用效率.结果表明水肥单因子对水分利用效率有显著影响,影响顺序为水>磷>氮.其中,氮、磷施用量对水分利用效率的提高是正效应,而灌水量对水分利用效率是负效应.水肥多因子对水分利用效率有交互效应,氮与磷之间、氮与水之间的交互效应极显著,对水分利用效率表现为正效应.磷与水之间表现为负效应,但不显著.水分利用效率超过10 kg/(hm2·mm)的水肥优化管理方案为,施氮量102.6~239.3 kg/hm2 ...
尹光华 刘作新 李桂芳 梁海军 蔡崇光
doaj  

Elevation, soil pH and calcium availability shape regional and local scale spatial patterns of PhoD gene abundance in tropical and subtropical forests

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Organic phosphorus mineralization is a critical process in the phosphorus cycle, governing phosphorus bioavailability for plants. The PhoD gene, which encodes the key enzyme alkaline phosphatase, serves as a valuable biomarker for this process.
Sandhya Mishra   +3 more
wiley   +1 more source

有限灌溉对绿洲春玉米农田耗水特征及水分利用效率的影响

open access: yesShuitu Baochi Xuebao, 2016
为了探究有限灌溉对绿洲沙地春玉米农田耗水特征及水分利用效率的影响,利用中子仪结合烘干秤重法连续监测了河西走廊荒漠绿洲沙地春玉米不同生育期农田土壤水分动态,分析了玉米农田日耗水量动态与土壤蒸散及作物水分利用效率。结果表明,整个生育期除播种-五叶期和拔节-孕穗期外,所有有限灌溉处理及充分供水对照间日耗水量均无显著差异(P>0.05),各生育时段内日耗水量随生育过程呈由小到大再由大到小的变化趋势,其峰值出现在吐丝~灌浆中期且高达6.8~10.0 mm/d。灌水最少但产量最高的有限灌溉处理 ...
张恒嘉, 黄彩霞
doaj  

豫北地区冬小麦滴灌灌水技术参数研究

open access: yesShuitu Baochi Xuebao, 2023
为优化豫北地区冬小麦在滴灌条件下的灌水技术参数,通过田间试验系统研究了不同滴头流量(2.0,4.0,6.0 L/h)和滴灌带间距(40,60,80,100,120 cm)对灌溉水在土壤中分布、冬小麦产量以及水分利用效率的影响。结果表明:就灌水均匀度而言,缩小滴灌带间距和增加滴头流量可以提高灌溉水在冬小麦根区的分布均匀度;本试验条件下滴灌带铺设超过80 cm,会影响冬小麦产量及其构成,滴灌带间距相同时,冬小麦产量随着滴头流量的增加呈递增趋势。就水分利用效率而言 ...
衣若晨   +6 more
doaj  

Home - About - Disclaimer - Privacy